Nut-lock.



} W. BROTHERTON.

NUT- LOCK.

APPLICATION FILED P3119, 1903.

PATENTED JUNE 23, 1903.

N0 MODEL.

awe (Ma d Patented June 23, 1903.

WILLIAM BROTHERTON, or PEEKSKILL, NEW YORK.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 751,427, dated June 23, 1903.

Application filed February 18, 1903. Serial No. 143,949. (No model.)

arrangement of. its parts, as hereinafter described.

The object of the invention is to provide a nut of special construction adapted to be used in combinationwithabolthavinga thread and a recess extending transversely across the threaded end thereof, the nuthaving a closed end provided on its inner side with a cone or a frustum of a cone, with an annular recess sur-.

rounding the same, the said nut when screwed upon the thread of the bolt forcing the apex of the cone or the end of the frustum into the recess in the end of the bolt and spreading the opposite portions of the bolt and deflecting them into the annular recess surrounding the cone or 'frustum ofthe cone.

In the accompanying drawings, Figure l is a side elevation of the bolt with the nut provided with a cone shown in section. Fig. 2 is a sectional view of the device shown in Fig. 1, cut on line 2 2. Fig. 3 is a side elevation of the bolt, showing the nut in section closed, as at 5, and the cone 6 is located with- I in the nut, the apex of the said cone extending toward the bolt 1. The said cone is surrounded by the annular recess 7.

In the form of the invention as shown in Figs. 3 and 4 the frustum of'a cone is substituted for the cone 6, which answers all requirements.

is secured in contact with the bolt and can only be removed by the exercise of extraordinary force. The outer wall of the annular recess 7 is parallel withthe surface of the cone or frustum, and consequently the said recess is of such shape as to permit the reception therein of the maximum length of the projections on the nut of the bolt constituting the sides of the recess 3.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-' 1. A nut-lock consisting of a bolt having a recess at the end thereof, a nut adapted to be forced upon said bolt, said nut having an integral conical part, said conical part being surrounded by an annular recess, the outer wall of whichis parallel to the side of the conical part, the said conical part being adapted to enter the recess in the bolt and distort the ends thereof into the annular recess.

2. A nut-lock consisting of a bolt having a recess at the end thereof, a not adapted to be forced upon said bolt, said nut having a conical part, said conical part being surrounded by an annular. recess, the outer wall of said recess being parallel with the side of the conical part, said outer wall of said recess and the side of said conical part being smooth, the said conical part adapted to enter the recess in the bolt and to distort the ends thereof into the annular recess.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM BROTHERTON.

\Vitnesses:

LEVEBETT CRUMB SANFORD R. KNAPP 

